83378849 has 8 divisors (see below), whose sum is σ = 86280480. Its totient is φ = 80521056.

The previous prime is 83378843. The next prime is 83378861. The reversal of 83378849 is 94887338.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83378849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83378797 and 83378806.

It is not an unprimeable number, because it can be changed into a prime (83378843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7067 + ... + 14720.

It is an arithmetic number, because the mean of its divisors is an integer number (10785060).

Almost surely, 2^83378849 is an apocalyptic number.

83378849 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

It is an amenable number.

83378849 is a deficient number, since it is larger than the sum of its proper divisors (2901631).

83378849 is a wasteful number, since it uses less digits than its factorization.

83378849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21919.

The product of its digits is 1161216, while the sum is 50.

The square root of 83378849 is about 9131.2019471699. The cubic root of 83378849 is about 436.8697410888.

The spelling of 83378849 in words is "eighty-three million, three hundred seventy-eight thousand, eight hundred forty-nine".